I have my GBox connected to a touch screen monitor, a mouse, and the remote control. (I have also tried the three independently) The mouse works as I would expect. The remote works as I would expect. (including the mouse button) However, the touchscreen monitor is always in mouse mode. I cannot seem to change it to touchscreen mode. I have tried three different touch screen monitors from two different manufacturers. They work fine with other machines.
One time, and one time only, when I booted up the machine, the touch screen monitor worked as a touch screen. I don't know why it worked, but it did work for one session. After rebooting, it no longer worked, and hasn't since.